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I'm familiar with the systems you outline, and yes, those are more difficult to penetrate. However, those systems are significantly more expensive and more comp

I'm familiar with the systems you outline, and yes, those are more difficult to penetrate. However, those systems are significantly more expensive and more complex than the simpler ICS systems. Oldsmar Fl doesn't sound like a place that could afford such a system. Of course, can they afford not to have higher security systems is an open question?

koheripbal 6y ago
The biggest cost of having physically separate networks (or at least network separated) is the HR cost of increased staffing and on-call requirements due to not being able to support the system remotely. For a small city, it's non-trivial.